/* flipcard.css */
.flip-card {
  width: 310px;
  height: 450px;
  perspective: 3000px;
  cursor: pointer;
  position: relative;
  transition: top 0.3s ease;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform-style: preserve-3d;
  will-change: transform;
}

.flip-card:hover {
  top: -10px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.6s ease;
  will-change: transform;
  contain: layout; /* Performance boost on Safari */
}

.flipped .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.flip-card-front {
  background-color: #f8f8f8;
}

.flip-card-back {
  background-color: #e0e0e0;
  transform: rotateY(180deg);
}